Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:17:19 2013 Optimize a model with 1200 rows, 26600 columns and 54050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.16s Presolved: 1100 rows, 26450 columns, 52900 nonzeros Variable types: 26000 continuous, 450 integer (450 binary) Root relaxation: objective 2.208160e+05, 1965 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 4 - 220815.985 - - 0s 0 0 220896.360 0 3 - 220896.360 - - 0s 0 0 220928.451 0 4 - 220928.451 - - 0s 0 0 220928.451 0 4 - 220928.451 - - 0s 0 0 220939.417 0 4 - 220939.417 - - 0s 0 0 220941.721 0 4 - 220941.721 - - 0s 0 0 220955.385 0 4 - 220955.385 - - 0s 0 0 220966.806 0 4 - 220966.806 - - 0s 0 0 220972.877 0 3 - 220972.877 - - 0s 0 0 220973.658 0 4 - 220973.658 - - 0s 0 0 220975.124 0 4 - 220975.124 - - 0s 0 0 220976.052 0 3 - 220976.052 - - 0s 0 0 220976.134 0 3 - 220976.134 - - 0s 0 0 220976.169 0 3 - 220976.169 - - 1s 0 0 220976.197 0 3 - 220976.197 - - 1s 0 0 220976.197 0 3 - 220976.197 - - 1s H 0 0 236050.11836 220976.197 6.39% - 1s 0 2 220990.058 0 3 236050.118 220990.058 6.38% - 1s H 27 18 221985.63641 221121.495 0.39% 18.1 1s H 81 14 221750.21488 221121.495 0.28% 9.2 2s * 155 8 12 221476.77211 221232.114 0.11% 11.8 2s * 164 2 13 221475.77318 221427.506 0.02% 14.5 3s Cutting planes: Flow cover: 18 Explored 167 nodes (4882 simplex iterations) in 3.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214757731774e+05, best bound 2.214650378389e+05, gap 0.0048%